Coal-sifter



UNITED STATES PATENT OFFICE.

J. A. SHEEFER, OF ROCHESTER, NEV YORK.

COAL-SIFTR.

Specification of Letters Patent No.

To all whom it may concern.'

Be it known that I, J. A. SHEFFER, of the city of Rochester, in the county of Monroe and State of New York, have inyented certain new and useful Improvements in Machines for Riddling or Sifting Ashes and Separating the Oinders Therefrom; and I do hereby declare the following to be a full and accurate description thereof, reference being had to the accompanying drawings, making part of this specification, and to the letters of reference marked thereon, the same letters referring to like parts in all the fig ures.

Of said drawings Figure l is a perspective view of my improved riddling machine with the cover partially open. Fig. 2 is a side elevation-wthe side of the outer box being removed; and Fig. 3 is an end elevation-the end of the outer box being removed.

The nature of this invention consists in an improved arrangement and combination of parts whereby the cinders are easily and efficiently separated from the ashes, without any danger of the dust being diffused in the apartment or around the operator; and whereby the dust with which the outer box is filled after operating the riddle is prevented from resettling on the cinders.

To attain these objects itis obviously necessary that the riddle receive a reciprocating or shaking motion; that both the rid dle and the containing box be closely covered; and that the means of operating the riddle be accessible from the outside.

On referring to the drawings it will be observed that the riddle (B) slides upon ways (IV IV) attached to the outer box (A) and that by means of these ways it is kept sutliciently close to the cover of said box (A) to require no cover of its Own.

Motion is imparted to the riddle by means of the handle (H) partially rot-ating the rockshaft (R) which carries two slotted arms (a a) which act upon pins (P P) at- 26,789, dated January 10, 1860.

tached to the riddle as shown in Figs. 2 and 3. By means of the open slots in the arms (a a) the riddle moves in the plane of the ways (W IV), although the arms themselves have a circular or radial motion; while at the same time the riddle is easily removed for the purpose of emptying its contents. And from the riddles being less than the containing box and thus leaving an open space at either end all the clinkers &c which are found in the cinders can be picked out by raking them over with the handle H and then dropped among the ashes. The handle D serves to prevent the handle H from be- 'ing pushed too far and thus striking the riddle against the end of the box (A). And there is another handle on the opposite side (not seen in the drawing) to be used with the handle D for lifting or carrying the whole.

It will thus be seen that the various operations of filling the riddle, separating the ashes and cinders and depositing each in its proper place outside the box are all reduced to the utmost simplicity. But one cover has to be removed in order to expose both the riddle and the box; and it is not required to move the whole box and its contents in order to separate the ashes as is the case in mostother machines. )While all the oints and bearings are susceptible of packing so to prevent the escape of the smallest quantity of dust.

Having thus described my invention, what I claim therein as new and desire to secure by Letters Patent is- The combination and arrangementof the rockshaft (H R a a) and ways (IV W) with the riddle (B) and containing box (A) in the manner and for the purpose substantially as setforth.

J. A. SHEFFER. [Ls] )Witnesses JOHN PLIM, E. A. ROBERTS. 

